[fenix] For https://github.com/mozilla-mobile/fenix/issues/18034 - Don't animate the toolbar while the tab is loading

Use the new controller offered by AC to resolve some browser layout issues and
also offer an experience consistent with that of other browsers.

app/src/main/java/org/mozilla/fenix/components/toolbar/ToolbarIntegration.kt

@@ -19,6 +19,7 @@ import mozilla.components.concept.engine.Engine
 import mozilla.components.concept.storage.HistoryStorage
 import mozilla.components.feature.tabs.toolbar.TabCounterToolbarButton
 import mozilla.components.feature.toolbar.ToolbarAutocompleteFeature
+import mozilla.components.feature.toolbar.ToolbarBehaviorController
 import mozilla.components.feature.toolbar.ToolbarFeature
 import mozilla.components.feature.toolbar.ToolbarPresenter
 import mozilla.components.support.base.feature.LifecycleAwareFeature
@@ -53,6 +54,8 @@ abstract class ToolbarIntegration(
     private val menuPresenter =
         MenuPresenter(toolbar, context.components.core.store, sessionId)
 
+    private val toolbarController = ToolbarBehaviorController(toolbar, store, sessionId)
+
     init {
         toolbar.display.menuBuilder = toolbarMenu.menuBuilder
         toolbar.private = isPrivate
@@ -61,11 +64,13 @@ abstract class ToolbarIntegration(
     override fun start() {
         menuPresenter.start()
         toolbarPresenter.start()
+        toolbarController.start()
     }
 
     override fun stop() {
         menuPresenter.stop()
         toolbarPresenter.stop()
+        toolbarController.stop()
     }
 
     fun invalidateMenu() {